Perl對文件的操作，跟其它的語言類似，無非也就是打開，讀與寫的操作。
1. 打開文件
#! c:/perl/bin/perl -w
use utf8;
use strict;
use warnings;
my $filename = 'test.txt'; # 或者用絕對路徑,如: c:/perl/Learn/test.txt
if(open(MYFILE,$filename)) # MYFILE是一個標志
{
printf "Can open this file:%s!", $filename;
close(MYFILE);
}
else{
print "Can't open this file!";
}
2. 讀取文件
#! c:/perl/bin/perl -w
use utf8;
use strict;
use warnings;
my $filename = 'test.txt';
if(open(MYFILE,$filename))
{
my @myfile = MYFILE>; #如果要讀取多行，用此方法，如果只讀取一行為:$myfile = >;
my $count = 0; #要讀取的行數，初始值為0
printf "I have opened this file: %s\n", $filename;
while($count @myfile){ #遍歷
print ("$myfile[$count]\n"); #注意此種寫法.
$count++;
}
close(MYFILE);
}
else{
print "I can't open this file!";
}
exit;
3. 寫入文件
#! c:/perl/bin/perl -w
use utf8;
use strict;
use warnings;
my $filename = 'test.txt';
if(open(MYFILE,">>".$filename)) #此種寫發，添加不刪除
{ #此種寫法，重寫文件內容 MYFILE,">".$filename
print MYFILE "Write File appending Test\n";
close(MYFILE);
}
else{
print "I can't open this file!";
}
exit;
